Programs for convenient online communication with your software.
↓ New in the category "Networking":
Free of charge
Net Speakerphone 4.8 build 090508 is a client that allows you to exchange messages in local network... The Net Speakerphone application allows you not only to send messages to users, but to use your computer as a network phone.
Free of charge 
Network Assistant 4.5 build 2668 is an application for communication and effective interaction using a local network, which does not require a dedicated server.
Free of charge 
BORGChat 1.0.0 build 438 is a chat client that works for free on the local network.
Free of charge 
LAN: Looking Any Network 2.75 is an application that, despite its ease of use, is quite functional. The LAN: Looking Any Network application will be useful for any type and category of users to be able to monitor and test a local or Internet network.
Free of charge 
CommFort 5.40 is a multifunctional and quite convenient client-server chat, which is designed to work in a local network and combines not only text and voice chat, but also a tool for the possibility fast transfer individual files or file folders.
Free of charge 
LanSend 1.3.0.27 is convenient applicationto help you send messages to other computers on the network. LanSend can send messages using a specific user or an arbitrary group of recipients as the recipient.
Free of charge 
Intranet Chat 1.21b6 is a high-quality and quite convenient program for communication. The Intranet Chat program will allow you to communicate using correspondence not only on the local network, but also on the Internet.
Free of charge 
Vypress Chat 2.1.9 is an application that acts as a text chat running on a local network. The Vypress Chat application can run between two computers or support more than a dozen.
Free of charge 
VideoPort VideoPhone 5.5.6 is an application for video communication using the Internet or local area network. VideoPort VideoPhone app also has the ability to use noise reduction, face detection, automatically detects channel width and has other features that will provide high quality video even with a weak channel.
Free of charge 
Mixero 0.57 is a convenient, functional and powerful Twitter client. Mixero is packed with tools such as Contexts, Activity Sheet, and Filters that allow you to organize and filter your Twitter stream, filtering out unnecessary information.
free
Mibew Messenger 1.6.4 is a free-source application that provides convenient and fast online consultation. With the help of the application, it is possible to add a button to the site with direct communication with your operator, and all communication will take place directly in the browser. The application allows you to communicate with a large number of operators at the same time and the choice of an operator for communication occurs with manual switching.
What is a network chat software? it chat (from the English "Chat", conversation) or messenger (the program that transmits messages).
Modern chats and instant messengers can not only send messages, but also exchange pictures and files, make audio and video calls.
Some programs necessarily need the Internet to work, some do not, they work using their own server, which works for you, within the company. This is, of course, much safer.
Let's talk about one of these programs. What it can be used for and how.
First, a short video to briefly explain why this program is needed:
And now in more detail:
1. For messaging
Despite the obviousness, it is worth noting that messages must be encrypted, and not by some self-made algorithm, but by a serious one, open library,. The message history should be saved to own server within the company, not somewhere on the Internet. And finally, for the program to work, there must be.
MyChat is fine with this, so let's move on.
Here the developers of the on-net messenger MyChat took an interesting path, they did not reinvent the wheel and use the WebRTC engine, the most advanced calling technology in the world at the moment. You can make calls not only between MyChat client programs, but also between the program and the WEB-chat, which works in the browser Chrome, FireFox, Opera or Edge. All modern browsers already support WebRTC technology.
Calls, of course, are unlimited, no one needs to pay for them, communication goes through existing communication channels or via a local / corporate network.
MyChat voice compression works with the Opus codec. Its algorithms operate with low latencies, from 2.5 to 60 milliseconds, support variable bitrate, compress audio data very well, better and better than MP3, Vorbis, AAC LC, AMR-WB and Speex.
In a non-technical language, you can call MyChat even through mobile GPRS connections, and these are really very low speeds.
It is very important that it all works automatically, the administrator does not need to understand the black magic of codecs, sound levels, bit rates, noise reduction, equipment settings and other things. Everyone who has configured Jabber servers and a zoo of clients for them, and everyone with their own nuances and incompatibilities, will understand me.
3. For group communication
Popular programs like Skype or Mail.ru Agent, and using retro software like IRC in a modern office is simply not serious due to the complexity of the settings, weak opportunities and stopping the development of the IRC protocols (its last RFC is dated April 2000).
In MyChat, text conferences (they are also called channels) have been around since the very beginning of the messenger, since 2004, and have been developing all this time. For September 2016 came out. Already by this indicator, one can understand how seriously the developers develop and support it.
Any number of people can be in conferences at the same time (there are real examples comfortable work several hundred people). You can close them with a password to separate user groups into different projects or departments. You can prohibit leaving important conferences, then users simply cannot leave them, accidentally or deliberately. The conferences look pretty nice:
There is even special locks and punishment (kicks and bans, old school will appreciate :) as well. On the server of the messenger, you can create as many conferences as you like and include the right people there automatically, fortunately, the WEB admin panel can do this:
4. Communication in a local network without the Internet
Probably, it makes no sense to engage in preventive intimidation, that, they say, you cannot use ICQ, Skype and hengouts in a corporate party, because their servers are located overseas and your messages are stored there, filtered and read by no one understands (for anyone interested, I recommend the article "" there everything is laid out "on the shelves").
Adequate company leaders and system administrators, I'm not even talking about computer security specialists - they understand this perfectly.
However, you cannot just take and throw away an already familiar program. If you are looking for something to replace, then you need to choose software that will at least be no worse in terms of functionality in order to transfer employees to it without unnecessary losses.
Curiously, many initially started using. Here the developers have an interesting original approach: they abandoned the classic trial version for 30 days, the program is free immediately after installation, the limitation is only on the number of online connections. But 20 people online is really enough for the eyes, for tests - that's for sure, I'm not talking about the real work of small companies.
There is a good introductory article on how to launch the MyChat messenger in your company and "tie" employees into a single network, especially if there are geographically scattered offices: "".
In general, there is even more in the messenger than you need. You will most likely have a task, which services should simply be banned so that users' eyes do not run up :) The plus is that this is all done through a convenient structure in the admin panel, it is called "Rights Groups", all changes are applied instantly and the interface custom applications immediately it displays:
Roughly speaking, graphical emoticons were banned - even the icon for calling emoticons disappeared from users right away. Disabled video calls - Video call buttons disappeared from the toolbar. Instantly. Without restarting the application. You cannot use conferences, but only one-on-one communication in private - the program is instantly transformed.
An interesting approach, and very visual, it's worth trying - do you get used to it so much that you think how it was possible to work without all this before?
5. Program for communication in the office, how it works
Office messengers usually have their own set of requirements, in addition to a user-friendly interface, preferably one that is as similar to MS Office as possible. Because everyone is already accustomed to it, you don't have to spend a lot of time telling users many times what and how.
Getting people used to certain programs and switching to others is a difficult process, but that's not all.
Since we are choosing a messenger for the office, this is not for you to exchange cats in social networks. This is a real working tool. And here MyChat shows itself in all its might, it is clear that the emphasis in its development was placed precisely on the work of companies.
At first, it works integration with Active Directory... Users are dragged out of the domain, via LDAP, with all their names, phone numbers, emails, and God knows what + transparent NTLM authorization works. MSI package for deployment via GPO. In the official help.
Secondly, there is . To be honest, it's hard to find a company that doesn't use this accounting software in the vastness of our immense. So, you can easily "tie" an already working 1C with a corporate chat, I wrote about this recently on Infostart in the article "1C: Enterprise + corporate chat, how to set up prompt notifications in 10 minutes," I recommend reading.
Thirdly, a rather powerful file server is built into MyChat. Both the native MyChat Client and anybody else can connect to it. FTP client... For example, I prefer FAR and Total commander, for employees - FileZilla. Everything works. Convenience is that this server works "out of the box", each user who is in the chat is automatically created an account on file server + is common, public access... He, of course, does not hold up to specialized servers, but, in all honesty, even his capabilities are enough in most cases.
Fourth, Kanban board for project management... If you recognize from the picture a large whiteboard that hangs in many offices, you will understand me. This is the same board, only in electronic form.
You can start any number of projects, assign stages, performers, track deadlines. Move tasks between stages, comment on them, supplement them, apply filters for search, and the like. In general, "see the project" as a whole. Super thing, it will be useful in almost any company. It looks like this in operation (it works in a browser, by the way):
It's convenient to use on a desktop, on a tablet and a phone, of course, it's not that, but over time, I think the situation will improve for the better, given that new versions are released on average every month or two.
6. Sending messages and files offline
Sending messages and entire folders with files to users who are currently disconnected from the server (located offline) has always been strong point MyChat. Unlike Skype, where offline messages are received in a mysterious way, as if at the behest, in MyChat everything is usually clear.
Messages are stored on the server for an unlimited time, files and entire folders can be sent and not worry that they will not reach.
By the way, there is no way to send large folders with files by email. Even if you archive them, the message size will be one and a half times larger than the archive itself. And there are no guarantees whether the letter reached the recipient or not. There are no such problems in the MyChat messenger.
At any time, you can go to the message history, select the interlocutor, date range - and calmly read the history of the correspondence:
In light of the fact that Gmail, for example, refuses to accept executable files in attachments, and sometimes simply ignores archives with a password (of course, he also cares about my safety, yeah), sending messages and files in a corporate office chat will be a good help.
As one user put it well, "".
Summing up all that has been written, it is worth saying that the program is actively developing, despite its decent age. , there are several tens of thousands of messages on it and the developers promptly respond even to those who use the free version of the program.
Today there is two main ways organization of a corporate chat. First of them is to use the most common IM clients in our country: ICQ, QIP, Skype and so on. Its main advantage is ease of implementation and low cost. Indeed, it is impossible to come up with something easier: it is enough for all employees to establish a client and add each other to their contacts. The use of these systems is generally free.
However, this solution has a number of serious disadvantages. At first, they lack many very useful features... In particular, on all systems (with the exception of Skype) there is no group chats, message read confirmation functions, etc. Secondly, IM chats completely unmanageable across the organization. Each employee has his own account, with which he is free to do whatever he wants. This raises the problem of control over employee correspondence, access to the message archive, creation of “corporate” numbers, etc.
Thirdly, use IM clients - potential threat information security companies. And this is not only about technical issues (for example, the risk of downloading infected files, clicking on dangerous links, etc.) that can be successfully dealt with. IM chats are one of the main leakage channels confidential information, which, among other things, is quite difficult to control from DLP systems. This is especially true for Skype, which transmits traffic in encrypted form. In addition, there is always a risk that an employee will lose control over his ICQ account. Having obtained it, the attacker will be able to communicate with the company's clients, implementing these or those fraudulent schemes in order to deceive them. Which, in the end, will have an extremely negative impact on the reputation and business of the company.
Second the way to organize a chat for the office is to use special software. And although this is a somewhat more costly method, it is free from all of the above disadvantages. Well, additional features that can be actively used in business processes, increasing their efficiency, quickly recoup the costs of implementation. Naturally, this requires that the software implements all desired functions... Therefore, the choice of a program for organizing a corporate chat should be approached very carefully: the more functionality of the product, the more widely it can be used. At the same time, it is necessary to pay attention to another aspect - namely, the possibility of implementation and administration. Integration with Active Directory, remote management, scalability of the solution can significantly simplify the management of corporate chat, and therefore reduce the cost of ownership.
An example of a solution that meets all the requirements is the MyChat product presented by Network Software Solutions. It is with a client-server architecture. This means that a special server is used to ensure the operation of the product, which takes over communication and other functions. The client-server approach is optimal for organizing corporate chat in both small and large networks. It features good manageability, broad capabilities and low bandwidth utilization.
In terms of functions intended for end users, the program MyChat have something to brag about. You need to start with the presence of two modes of communication: personal and group. With the first, everything is very simple. Two users can correspond with each other in much the same way as in ICQ. Group communication implemented in the form of channels - special “groups”, to which either everyone or only certain employees of the organization can connect. In this case, the channels can be created by the administrator and always exist, or they can be opened by the users themselves (who have the rights to do so) if necessary. This flexibility comes in very handy in practice. For example, you can create one common channel for communication of all office employees and separate channels for correspondence within each department.
During communication, users can apply a wide range of different functions... Among them, we can note the possibility of using formatting of text and emoticons, arbitrary pictures and links in messages, transferring files both directly and through the chat server, saving the history of correspondence, ignore lists, filters (anti-mat, anti-flood), etc. In fact, in MyChat everything necessary for full-fledged and comfortable communication of employees with each other has been implemented.
Naturally, it is impossible to imagine an office chat without a contact book. IN MyChat there are even two of them. The first contains a complete list of all users registered in the system. Moreover, they can be divided into departments, highlighting the chief in each group. This is especially true for large companies in which employees from different departments may not know each other. The second contact book is personal. Each user has his own. It can include all the people with whom you need to communicate often.
In addition, in the considered office chat, a whole a number of additional features... The first one is notification system... With its help, you can send to all or only some users a certain message and request a read confirmation from them. This allows you to send out orders for familiarization, notification of meetings, etc. Moreover, employees will no longer be able to say that they did not see or read the message.
The second additional opportunity – built-in FTP server... Its presence in office chat may seem strange. However, this is actually very convenient, especially if the company has not yet deployed its own FTP server. What does he give? First, storage for recording files, both general, accessible to all users, and personal. Secondly, it can be used to exchange documents (for example, you can save documents on an FTP server for a user who is not online at the moment). Third, an FTP server is required to automatic update chat clients (we'll talk more about this a little later).
The next additional feature is bulletin board... You can "hang" an ad on it, which will be visible to all users within a specified period of time. You can also note the account manager, which provides convenient use of clients on those computers that can be used by different employees.
Many functions in MyChat is designed to increase the convenience of its deployment and administration. The more possibilities the system has in this regard, the more convenient it is to manage it. This means the lower the total cost of chat ownership. Distinctive feature MyChat is the ability to use in networks, including distributed ones, of very different scales, ranging from several to thousands and even tens of thousands of clients located in different cities or even countries. This is provided by a whole range of administrative functions.
You need to start by looking at how to install client programs. You can install them either manually or automatically using group policies. Active Directory... The same can be said for client upgrades. However, MyChat has a more convenient implementation of this process. This office chat has an automatic update feature. When using it, the client is updated independently at the command of the user, who is given a corresponding notification (in this case, the built-in FTP server is used, where the administrator must first download the distribution kit of the new version). Implemented in, which can greatly facilitate the life of the IT department of the company.
Another very important feature the office chat in question is own scripting engine... What is it for? This engine allows you to write arbitrary scripts that are used to automate various processes and integrate chat with other corporate software tools. Here you can also note the possibility of connecting various plugins. For example, a plugin for remote control users' computers. Combined with some other features MyChat (sending screenshots, MyChat Actions technology, etc.) this allows you to organize an effective technical support users.
The developers of the security program paid a lot of attention. All traffic transmitted in the system is encrypted, which makes it useless to intercept. This allows you to safely connect remote users over the Internet. You can also note the presence of a very flexible system for setting user access rights to chat capabilities. They are installed in groups, and the administrator can allow or deny almost any operation. This allows you to customize the chat for the office exactly as you need in each case.
Distinctive feature MyChat program is the active use of web technologies... This product includes its own web server that can be used to manage this office chat. This method of administration complements the traditional local console perfectly. It allows you to control the chat server remotely from your work computer or even from home via the Internet.
Sergey and Marina Bondarenko
Vypress Chat software is released in several versions, which differ as much as possible possible amount users on the local network.
One of the advantages of this program is a well-thought-out chat concept, in which users can organize groups to communicate according to their interests. Chatting is conducted in separate windows - channels. By default, the program uses the main channel when it starts. Users create the rest of the channels on their own. The user can set the list of channels to which Vypress Chat should connect at startup.
The program can work both in multi-line mode and in single line mode. The chat contains tools for flood protection. So, for example, in the program you can create rules for filtering messages, forcing it to ignore messages from users with a certain name or IP-address, as well as with a given text.
Each user can be assigned his own sound signal, as well as set the automatic sending of a message when a user appears on the network.
Chat messages can be sent both in the general channel and individually. In addition, using the F6 key, you can create a multicast message, highlighting those in the list of users who should receive the sent text. Vypress Chat users can change their chat name and set their current status (Active, Do Not Disturb, Away and Disabled). The program also has an archive of messages, by which you can quickly find useful information received yesterday or even last month. With Vypress Chat, users can also send files to each other.
If the text of a message typed in a general channel or in an individual message was made by mistake in a different layout, you can quickly change the layout of this text using the keyboard shortcut.
Network settings can be detected by the program automatically. Vypress Chat can work using a local network or the Internet (via TCP / UDP protocol). If the program is used on a network with a specific configuration, it is convenient to use the export of all network parameters programs into one XML file.
LANcet Chat is a good free chat with Russian support, designed for a small local network, with total users about twenty people.
This chat does not require setting up a local network at all, except in rare cases, when, for example, you need to determine the port used by the program.
LANcet Chat supports a small set of emoticons. Communication using this chat can take place in conference mode, as well as in private communication mode. Switching between windows of private communication and general chat is carried out using convenient tabs. In order to communicate with one of the users confidentially, you need to go to the "Private" tab and indicate this interlocutor in the list of all users in the chat. If this is not done, the message will not be sent. You need to specify the interlocutor only once, after which messages are sent to him automatically.
To make it clear to the interlocutors in the conference who they are dealing with, users can set an icon indicating their gender. In addition, the program can customize the size and color of the font that is used for messages for each user.
When a new message appears, the program may report this sound signal or animation of the icon. All major chat events are accompanied by pop-up notification windows.
To save free space on the screen, in the LANcet Chat settings, you can turn off the display of the program on the taskbar. In this case, it will present itself only as an icon in the system tray.
One of the features of the program is a special function "Antiboss", which allows you to quickly hide the program window by pressing just one key. By default, this is the Esc key, but in the program settings, you can select another key instead. Chat keeps statistics of conversations, recording all events in the LANcetChat.history file. The size of this file can be limited to a certain size.
The program has two interfaces - normal and simplified. All tools are available to the user in the usual interface text editor, contact list and menu with some commands. The simplified version of the program presentation shows one contact list, which makes LanTalk.NET look like an ICQ client or some other service to send instant messaging... The user's contact list is displayed in the form of a tree structure; by default, the chat uses the user's name in the system as an alias in the chat.
LanTalk.NET allows you to fine-tune both the client itself and network connections... For example, you can set maximum number connections, connection support time, set the time interval after which the program will check the status of users, define the port for messages and the port for the "Contact List", the size of the sent text message and etc.
The program has a quick reply editor. With its help, you can compile a whole collection of the most frequent answers. Subsequently, template messages can be sent with just a few keystrokes.
You can attach any file to any message - document, archive, etc. In addition, graphics in GIF, JPG, JPEG or BMP formats can be inserted into the message body. LanTalk.NET uses a set of emoticons similar to that found in Vypress Chat. When using a smiley in the body of the letter, the program converts the graphic image of the smiley into text, so the size of the picture can be changed in the body of the letter.
The program provides three modes of sending messages - send text only to those users who are in the "Online" status, only to those users who are currently in the "Offline" status, and send messages to everyone, regardless of their status. When sending messages in the program, you can set the priority of the sent message. If you want company employees not to engage in empty conversations, you can configure the program so that the chat can only receive messages.
LanTalk.NET has a message search option. For a more precise query, you can specify search criteria in the program - determine the time period in which the searched text was sent, indicate whether the message contained an attached file, specify who exactly the message was intended for, etc.
This small program is made on the principle "the simpler the better". The lack of any features had a positive effect on the size of the chat - less than a megabyte. As a result, this program is one of the smallest chats for local networks. Local Network Chat does not require installation. It is enough to launch the file, and the chat is already working. In addition, this chat is almost completely devoid of an interface. A tiny window for a list of active users and a pop-up chat window - that's the whole "look" of Local Network Chat. The program in the process is displayed as an icon in the system tray, clicking on which opens the contact list.
The program uses UDP protocol for communication, and, if necessary, the connection can be configured by specifying the port. In the user list, you can quickly view the IP address of each remote computer. The program can automatically load with Windows, with a time delay of thirty seconds.
The text of negotiations in the chat window can be quickly deleted or, conversely, saved in separate file RTF using the appropriate command context menu... Local Network Chat can be used for free, but please note that free version the program allows you to chat only three users of the local network at the same time.
Unlike the chats described above, CommFort works according to the client-server scheme. In order to connect several users by chat in a local network, it is necessary to install a server on one of the workstations that will combine and redirect user requests. This chat architecture has many advantages. For example, using the server, you can configure chat functions - enable flood protection, set rights for users, appoint moderators, control the server's communication channel width, fine-tune the logging of events on the server. In addition, using the server settings, you can allow the use of the message board in the chat, enable the function voice chat, allow file transfer. You can also limit the number of users, create filters to automatically replace "bad words" in the chat, and much more.
Each chat user can fill out his profile, which includes date of birth, home and work phone numbers, E-mail and other data. If you wish, you can upload your photo to your profile.
The program has the ability to work with a common bulletin board. This feature allows you to post messages that will be visible to all chat users. Subsequently, the published ad can be edited or removed by the user who posted it. CommFort supports skins and has a smiley library like the one found in QIP.
One of the features of the program is the ability to create a voice chat between users. Depending on the speed of the network connection, in the chat settings, you can set different quality of audio data transmission, starting from the lowest, with a frequency of 8 kHz and with a sound depth of 8 bits.
The program works perfectly even on those networks where the data transfer rate is unstable and connection breaks are often observed. Such troubles have little effect on CommFort's work - the program has a well-implemented mechanism for caching transmitted data. In the chat, it is possible to continue downloading the transferred files, so if the connection with the remote computer is interrupted for no more than five minutes, you can rest assured - as soon as the connection is established, the data will be transferred.
The interface of this chat consists of two parts - a window with a list of users in the chat and a main window for sending and receiving messages. Boogy Chat lacks a main menu, and chat settings and commands are implemented using buttons on the toolbar. On the one hand, this is good, since it saves space, but on the other hand, it is not immediately possible to understand which button is intended for what.
By default, the contact list is divided into two groups - the main group and the "black" list, which includes blocked users. Any user in the contact list can be blocked or unblocked by clicking on their name and choosing the "Deactivate / Activate" command. If there are too many users in the contact list, you can organize the list by creating special groups and giving them your own names.
When the user is away from his workplace, he can use the answering machine function. This Boogy Chat feature only works if the user is chatting privately. In the absence of a user, the chat will automatically respond to the message and send a pre-prepared answer, for example, "I left for five minutes, I will be there soon." To enable this option, it is enough to create at least one answer option in the program settings.
Boogy Chat can insert images into text, and also allows you to use animated emoticons. You can quickly turn off the animation of GIF files in the chat window, and you can also disable the display of graphics. Each message can be accompanied by a time stamp of departure, the user's IP address and his image.
The entire history of chat messages is stored in the History directory, in the folder where the program was installed. This data can be saved in text format txt or in RTF format, and in the second case, images inserted into the text of messages will also be automatically saved.
Despite the fact that this chat is at the testing stage, it may well compete with many analogues, including paid ones.
Chatting can be done in the main channel or in private mode. In addition, AChat users can create their own communities in separate channels by sending an invitation request to acquaintances from the contact list.
The fact that there are no smilies in the program is easy to explain - this chat is intended mainly for serious corporate networks. Another interesting feature of the program - a mass poll - can serve as proof of this. Not sending messages (which, by the way, is also in the program), but a survey, with the ability to answer it either in the affirmative or negative. This is a very handy option when you need to quickly make a decision by conducting a remote vote to approve a project. In the process of such voting, you can select groups or individual users to whom the request will be sent.
The program can store its settings either in the system registry or in a separate configuration file. Another very useful option of the program is the automatic transition to the "do not disturb" ("DND") status when an application is launched on the computer. full screen mode... When using this option, the likelihood that while working with another program in full-screen mode, a new message will not arrive in the chat and will not cause an application conflict, will be higher. The program can also show other users which application is currently running in full screen mode. If there is no activity on the computer or when the screen saver is turned on, the chat can set the corresponding status - Away.
AChat allows you to send files, and, after sending, the data is placed in a folder with general access... A separate tool in the program is for sending graphics. It can be used to send an image that will open on a remote computer in a special viewer window. Similarly, you can send the contents of the clipboard by copying a fragment of the image there.
In order to attract the user's attention, for example, to hint about a private conversation, a warning signal can be sent to him.
Conclusion
It is generally accepted that the most universal way communication - using instant messaging services, such as ICQ, Skype, etc. This option is not always convenient, because to use the above clients, an Internet connection is a prerequisite. Local chats can work without access to the global web and, moreover, save Internet traffic. Despite the fact that all browsing programs allow you to communicate on a local network, each of them has its own advantages. CommFort software allows you to finely organize work with a large number of users and provides the ability to communicate through voice. If for some reason you are not satisfied with the mandatory presence of a server, you can try to install Vypress Chat, which, moreover, can work over the Internet. Well, Local Network Chat is a great solution for a small home network, which connects a maximum of three computers.
Written for CHIP magazine by Sergey and Marina Bondarenko
